the next giant leap - propulsion and habitats for mars
DESCRIPTION
Presentation about principles of rocket propulsion, habitat design and simulation missions for Mars exploration. Talk at Universiteit Twente, Faculty of Mechanical Engineering, 15 May 2014TRANSCRIPT
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The Next Giant Leap For Mankind
Propulsion and Habitats for Mars
Remco TimmermansTalk at Mars mini-symposium Universiteit Twente, 15 May 2014
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@timmermansr | UTwente | 15-05-2014 2
Agenda
• Getting to Mars is hard
• Why one way is easier than two way
• A little rocket science – propulsion
• Your home on Mars – habitats
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@timmermansr | UTwente | 15-05-2014 3
Getting to Mars is Hard
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@timmermansr | UTwente | 15-05-2014 4
So why is Mars harder than the Moon?
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Mars is Very Far Away
55 – 103 million km
400 million km
Distance to the Moon: 384,400 km
Average travel time: 5 months
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@timmermansr | UTwente | 15-05-2014 6
Radiation along the way
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@timmermansr | UTwente | 15-05-2014 7
From Difficult to Very Difficult
• Flyby, unmanned (e.g. Mariner 4, 1964)
• One way, unmanned, orbit (e.g. ESA Mars Express)
• One way, unmanned, landing (e.g. Viking, MSL Curiosity)
• Flyby, manned (e.g. Inspiration Mars, 2021)
• Two way, unmanned, landing, sample return
• One way, manned, landing (e.g. Mars One)
• Two way, manned, operate rover from orbit
• Two way, manned, landing, people return
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@timmermansr | UTwente | 15-05-2014 8
Why is it so difficult?
∆ 𝑣=𝑣 h𝑒𝑥 𝑎𝑢𝑠𝑡 ln𝑚𝑖𝑛𝑖𝑡𝑖𝑎𝑙
𝑚𝑓𝑖𝑛𝑎𝑙∆v = acceleration OR deceleration
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@timmermansr | UTwente | 15-05-2014 9
Rocket Equation
Variables:• Final mass, or spacecraft useful mass• Required ∆v (destination and route)• Propellant mass• Exhaust velocity
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@timmermansr | UTwente | 15-05-2014 10
Gravity on Mars
Earth gravity: 9.8 m/s2
Moon gravity: 1.6 m/s2
Mars gravity: 3.7 m/s2
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@timmermansr | UTwente | 15-05-2014 11
Escape velocity (∆v) per planet
Earth: 11.2 km/s
Moon: 2.4 km/s
Mars: 5.0 km/s
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@timmermansr | UTwente | 15-05-2014 12
Principles of rocketry
Rocket
Energy
Mass
Thrust
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@timmermansr | UTwente | 15-05-2014 13
Types of rockets
• Thermodynamic – heat and pressure– Chemical propulsion (solid, liquid, hybrid)
• Electrodynamic – charged particles in fields– Electrothermal (electrically produced heat)– Electrostatic (electric fields)– Electromagnetic (electro + magnetic fields)
• Nuclear propulsion – nuclear power for heat
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1 - Chemical propulsion
• Fuel and oxidizer combine in combustion chamber to produce heat and by-products
• Solid (solid fuel and solid oxidizer)• Hybrid (solid fuel and liquid oxidizer)• Liquid (liquid fuel and liquid oxidizer)
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Solid fuel rocket motor
@Arianespace
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Effect of grain geometry on thrust-time
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@timmermansr | UTwente | 15-05-2014 17
Hybrid rockets
@virgingalactic
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@timmermansr | UTwente | 15-05-2014 18
Liquid rocket motor
First used by Robert Goddard Success by Wernher von Braun
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@timmermansr | UTwente | 15-05-2014 19
Principle of liquid rocket motor
Snecma Vulcain-2 on Ariane 5
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Classic liquid rocket examples
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Modern liquid rocket examples
Soyuz Atlas V Falcon 9
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@timmermansr | UTwente | 15-05-2014 22
SpaceX Falcon 9
@SpaceX
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@timmermansr | UTwente | 15-05-2014 23
Monopropellant liquid rocket
@MarsCuriosity
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2 – Electric Propulsion
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@timmermansr | UTwente | 15-05-2014 25
Electrothermal thruster
SSTL Resistojet
(solar, nuclear)
@SurreySat
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Electrostatic thruster
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@timmermansr | UTwente | 15-05-2014 27
Electromagnetic thruster
@AdAstraRocket
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@timmermansr | UTwente | 15-05-2014 28
3. Nuclear propulsion
MTV = Mars Transfer Vehicle
Thermo Nuclear Rocket Engine
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@timmermansr | UTwente | 15-05-2014 29
Future: Solar Sail
In 2010 the Japanese IKAROS Solar Sail demonstrator flew to Venus@JAXA_EN
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Part II - Living on Mars
30@MarsOneProject
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Welcome to Mars
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Challenges after arrival
• Radiation• Temperature• Low oxygen• Lack of food• Lack of water• Lack of fuel• Atmospheric pressure• Communication time delay• Shelter
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@timmermansr | UTwente | 15-05-2014 33
Water of Life
• Drinking water
• Fuel (H2)
• Oxygen (O2)
• Radiation Shield
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Water of Life
Terraforming
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Surviving The First Decades
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@timmermansr | UTwente | 15-05-2014 36
Mars Habitat Constraints
• Leightweight• Deployable• Radiation shielding• Life support• Climate-proof• Durable• Multi-purpose• Self supporting• Expandable
@ISUnet
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Mars Analogue Missions
Photo: Mars Society@MDRSupdates
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@timmermansr | UTwente | 15-05-2014 38
Mars Habitat Research
Photo: Mars Society@MDRSupdates
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Mars Habitat Research
Photo: Dr. Ryan Kobrick@MDRSupdates
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ÖWF Dachstein Caves 2012
Photo: ÖWF | Katja Zanella-Kux@OEWF
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@timmermansr | UTwente | 15-05-2014 41
ÖWF Mars 2013 Morocco
Phot
o: Ö
WF
| Ka
tja Z
anel
la-K
ux
@OEWF
@OEWF
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@timmermansr | UTwente | 15-05-2014 42
ÖWF Mars 2013 Morocco
Phot
o: Ö
WF
| Ka
tja Z
anel
la-K
ux
@OEWF
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HI-SEAS Hawaii Analog
Photo: University of Hawaii | HI-SEAS@HI_SEAS
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Growing Food on Mars
Photo: Mars Society
Photo: Wiki Commons
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Mars 500 (days!) Experiment
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Mars 500 “Landing”
@Mars500project
Photo: ESA
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ESA Caves
@ESA_CAVES
Photos: ESA
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@timmermansr | UTwente | 15-05-2014 48
NASA Desert Rats
Photo: NASA@DESERT_RATS
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@timmermansr | UTwente | 15-05-2014
Bigelow Aerospace
4949Photo: Bigelow@BigelowSpace
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Life support systems
Photo: ESA@ISS_Research
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@timmermansr | UTwente | 15-05-2014 51
Mars, we are on our way…
Image: Mars Artists Community
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@timmermansr | UTwente | 15-05-2014 52
Wordt onderdeel van de space community!
NVR – Netherlands Space Society• Free student membership• Acccess to companies and space organizations• Networking events with the Dutch space sector• Only space ‘glossy’ in the Netherlands• @NVR_Ruimtevaart | www.ruimtevaart-nvr.nl
SGAC - Space Generation Advisory Council• Free membership• Represent young space professionals in United Nations• Meet the global leaders in space• Very cool events and scholarships• @SGAC | @SCACNL | www.spacegeneration.org
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@timmermansr | UTwente | 15-05-2014 53
Thank You!
Please follow me at:
@timmermansr@TravelsInOrbit
@WorldSpaceWeek@NVR_Ruimtevaart